<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div class="table-wrapper">
    <table>
        <thead>
        <tr>
            <th style="float:none"> 表头</th>
            <th style="float:none"> 表头</th>
        </tr>
        </thead>
        <tbody>
        <tr>
            <td style="float:none"> 单元格</td>
            <td style="float:none"> 单元格</td>
        </tr>
        <tr>
            <td style="float:none"> 单元格</td>
            <td style="float:none"> 单元格</td>
        </tr>
        </tbody>
    </table>
</div>

</body>
</html>